Nice one man, congrats. Looks pretty massive to me , I wonder why you considered too loose ? I am very curious if you had possibility to compare with a 200s and what are the diferences in sound ? It is still tight and fast ? have you enough extension in the lows, please ?Thank you
Happy Christmas to all !
It is certainly not as large as a 200S cabinet, and is really just a little bit bigger than the Sunn 1x15 cabinets that were offered back in the day. I am not sure what you are asking about when you say I considered too loose? Perhaps the sound too loose? I would say in answer to that, no, not at all. In fact, since I am friends with Conrad Sundholm, and he has an LMS system to measure the response of cabinets, and I live across town from him, we measured Isaac's 200S cabinet with the system, and we measured this 1x15 cabinet also. In most respects they are almost identical in their frequency response, even with the different speakers used. (A 200S cabinet uses two JBL D140's or K140's. This one uses an E140 and some 6 inch speakers hooked up to a crossover, though they were not installed when it was tested initially) The 200S cabinet has a little better high end extension, and the lows extend slightly lower also. I would have to look at the plots again to be able to quote numbers however. The reason the cabinet is so close to a 2x15 in sound and performance is that the port is the exact same size as in the 2x15, but is half the height. This allows for the same frequency response out of the port. The cabinet is as tall as a 2000S head is wide, and it is also as deep as a 2000S cabinet, so it has a bit larger internal volume than the vintage Sunn 1x15's, but not quite as much as the vintage Sunn 2x15's. The smaller port controls the bass and makes sure it is not boomy. It is extensively braced internally to stop cabinet rattling, and it also has a lot of foam inside to stop reflections from the square angles. A 200S 2x15 cabinet will be slightly louder than this 1x15 due to having two speakers and more speaker surface area with identical efficiency speakers will result in more volume. Other than that it sounds very much like a Sunn 2x15 without the 6 inch speakers in place. I have those hooked up to a switch on the cabinet now so I can use them or not.
P.S. I think you are right loudthud about how the vintage cabs were produced. That is how Conrad does his cabinets now too.